1 of 1 people found this helpful
Intrusion Defender -> SMTPI Service
Under the section called Connection Management there are two settings - SIZE Extension (MB) - External and SIZE Extension (MB) - Internal
External would be inbound messages
Internal would be outbound messages
Would the external sender receive a notification, and how would that look?
The MEG would block messages by either the ESMTP code:
MAIL FROM: <email@example.com> SIZE=12345678
or the actual size of the message after it has been accepted in proxy.
The sending server would generate an NDR with an error that would be something along the lines of "550, exceeds size limit".